Socket errors when hitting the server from the browser

[balegas]

[error] ** (Bandit.HTTPError) Header read socket error: :closed

or

[error] ** (Bandit.HTTPError) Header read timeout

Just hit http://localhost:3000/shape/issue?offset=-1 a few times. Seems to be easily reproducible if you wait a while between requests. I tried reproduce it more systematically with curl but without success. No other requests show up in 'network'. The browser might be doing something with the connection.